1. We'd like to buy some oranges. (改为一般疑问句)

2. This French book must be Mary's. (改为否定句)

3. It seems that she has changed a lot. (改为同义句)

4. Why don't you join an English club to practice speaking English? (改为同义句)

5. It is so hard that we can't understand the sentences. (改为简单句)

1. The dictionary might be Li Lei’s. （改为同义句）

The dictionary might                  Li Lei.

2. She had a cold because it was cold. (改为同义句)

  She had a cold ____________ _____________ the cold weather.

3 It must be Mary’s. (改为否定句)  

It  ___________ __________ Mary.

4. Your brother has never heard of the story, ________ ________?  (完成反意疑问句)

5. This is Lucy’s book. （对划线部分提问）

      ___________ __________ is this?